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Waveguide superconducting single-photon detectors for integrated quantum photonic circuits

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13 Author(s)
Sprengers, J. P. ; COBRA Research Institute, Eindhoven University of Technology, P. O. Box 513, Eindhoven 5600 MB, The Netherlands ; Gaggero, A. ; Sahin, D. ; Jahanmirinejad, S.
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The monolithic integration of single-photon sources, passive optical circuits, and single-photon detectors enables complex and scalable quantum photonic integrated circuits, for application in linear-optics quantum computing and quantum communications. Here, we demonstrate a key component of such a circuit, a waveguide single-photon detector. Our detectors, based on superconducting nanowires on GaAs ridge waveguides, provide high efficiency (∼20%) at telecom wavelengths, high timing accuracy (∼60 ps), and response time in the ns range and are fully compatible with the integration of single-photon sources, passive networks, and modulators.

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Applied Physics Letters  (Volume:99 ,  Issue: 18 )